I guess there is a reason why the 16-35/2.8 24-70/2.8 (or 24-105/4) 70-200/2.8 trio are still the ones being used the most in the photojournalistic field. The present and upcoming RF lenses are looking to cover this very well.For some/a lot: yes.
For me: never.
Such do-it-all zooms are an all compromize:
not small, not bright, not great in IQ.
Very few, if any, lenses ever made have taken "full advantage" of their respective mount designs.
I made a special trip to check out the R, RP, Z6, Z7, A7ii, A7iii, EM10 and EM5 mark II at a Best Buy, and all the EVFs stink badly except the EM5 Mark II. And that one is only marginal.
No way in the world I'd shoot with any of them until someone makes a usable EVF for high-speed moving subjects in difficult light.
I don't believe that Tilt-shift lenses are big sellers, so lower cost lenses should be a priority. Low sales has not stopped Canon from releasing some expensive RF sellers so far though.
Well now I need to know what the "look what we can do" lens is! Is it the 14-21 f/1.4? Will it be the widest lens that need a tripod collar?
"Too long" to release a pro camera is relative to the user. Too long for you may not be too long for others, and it certainly doesn't seem to be too long for Canon. I'm content waiting a while longer because there's nothing wrong with my 5D IV and I honestly don't think I can blame even one missed shot on the camera. Canon has said they'll take their time to get it right, and frankly I believe that's the right choice. I can wait, and despite the doom and gloom from camera reviewers, Canon as a company seems to be fine.I see Canon going the same way Nokia did in the mobile market.
We need a great mirrorless body to match the great lenses and they are simply taking far too long to release a pro EOSR.